Carbid-lamp attachment.



H. F. ROBERTS.

CARBID LAMP ATTACHMENT.

APPLICATION FILED MAR. 5, I918.

Patented Oct. 8

LUIIHIIII II In 1 r WIIN ESSES ATTOR N EY onrrnn srnrns HARRY F. ROBERTS, OF KAY MOOR, WEST VIRGINIA.

CARBID-LAMP ATTACHMENT.

Specification of Letters Patent.

Application filed March 5, 1918. Serial N 0. 220,534.

, To all whom it may concern:

Be it known that I, HARRY F. RoBnR'rs, a

citizen of the Unit-ed States, residing at Kay Moor, in the county of Fayette and State of Vest Virginia, have invented certain new and useful Improvements in Carbid-Lamp Attachments, of which the following is a specification.

This invention relates to lamps, particu larly, to portable gas lamps designed for miners use, and has for its primar object to provide a lamp of this type burning acetylene gas generated by the action of water on hydrogen carbid with a shield for the burner tip to prevent the flame from being extinguished by currents of air within and without the mine, and by disturbances "caused within mines when blasts and shots 'are fired.

To this end the invention consists in the .novel construction, combination and arrangement of parts hereinafter described, pointed out in the appended claims and illustrated in the accompanying drawings, in which,

Figure 1 is a front elevation, of an acetylene gas lamp of well known type provided with the improved shield, and,

Fig. 2 is an enlarged cross sectional view on the lines 2-2 of Fig. 1. I

In the drawings, 10 indicates a well known type of acetylene gas lamp having a carbid chamber 11 at the bottom, a water holding receptacle 12 at the top and a valve controlled by a stem 13 for regulating the amount of water to be fed to the lower or carbid chamber. Projecting from one side of the lamp 10 is a burner tube 14 upon which is mounted the usual reflector 15, the latter having a sleeve 16 on its rear face that fits over the burner 14 and is secured thereto by a screw 17.

The several parts above described are common to lamps of this type, and in such lamps when the gas issuing from the burner tube 14 is lighted, unless proper care is used to protect the flame it is very liable to be extinguished by slight currents of air. This at times is inconvenient for the user of the lamp, but particularly when the user is without matches or other means for restoring the light and to. overcome this difliculty, means are provided to protect the light from complete extinguishment. Means so employed form the subject of the Patented Oct. 8, 1918.

present invention and comprise a shield 18,"

preferably made of sheet metal bent into the form shown with a foot 19 bearing upon the front of the reflector and secured thereto by means of a bolt 20 and nut 21. From the foot piece 19 there is an outwardly extending portion 22 lying parallel with the burner tube 14 and forming a side curtain therefor which projects beyond the outer end of the burner where it is bent at a right angle to form the front 23 of the shield which extends across the front of the burner tube and is then bent rearwardly and extends parallel to the curtain 22 on the opposite side of the burner tube, terminating at the reflector and forming a curtain 24 for this side of the burner. The screen 18 is open both above and below the burner tube while in the front 23 is threaded a short section of tubing 25 in line with the opening in the burner tube. The inner end of the tubing 25 is spaced a short distance from the outer end of the burner tube 14 and may be adjusted to and from the burner tube by rotating the same. The opening in the tubular section 25 is greater in diameter than the gas opening in the burner tube It so that the flame of the lighted gas passing from the burner tube 14 will extend through the tubular section and project beyond the outer end of the same to give suitable illumination.

' In using the lamp, the valve stem 13 is turned to permit the proper amount of water to pass from the reservoir 12 in drops to the carbid holder 11, generating gas in the latter holder which passes outwardly through the burner tube 14. Upon applying a match, or upon operating the selflighting device 26 which may be found on some of the lamps in present use, the gas is ignited at the end of the burner tube 14, passing through the tubular section 25 and beyond the same, this portion serving as the illuminant and providing a light equally as efficient as the light produced by the lamp without the screen. If the lamp be subj ected to currents and drafts or sudden puffs of air that are liable to cause extinguishment of the light, the curtains 18 and 24 will protect the flame where it issues from the burner tube 14 even though the flame be yond the tubular section 25 be blown out. Under these conditions it is only necessary to blow with the breath behind the shield ried around with perfect safety, and be protected from absolute extinguishment however strong the arr curre'i-rts and drafts liahle to be encountered inmines.

Having described my invention, I claim: L A burner tip shield having parallel sides and a connectil'i-gstrip to extend around the end of a burner tip and spaced from the end' of said tip, and a tubular member threaded in said connecting strip and adjustable to and from the burner tip. 2". A shield for usewith a gas flame to thereof comprising U-s'haped member extending around opposite sides and the front of the bnrner tip and having means for v I at the top and bottom, and a tubular member holdin the same rigidly in place, and a tubular section threaded in the front of the" shield member having a longitudinal opei'iin'g therethroug'lr of greater diameter than the opening in the burner for the passage of the gas flame.

3; In combination with the reflector of an acetylene g'a's. lamp, of a shield for the burner of said lampcomprising a strip of sheet metal bent into U- for'm to inclo'se the tip of the burner and having a foot piece at one sidefor securing the shield to the refiector-,- and a tubular section threaded into the front of the shield for adjustment to V c eeses shield having a longitudinal? opening thereing in theburner through which the flame of the burner is adapted to pass.

5. A device for preventing the total extinction 0 ft gas flame by air currents com- 7 I I -pr1sn1 g anangular shield adapted to be sc prevent the total extinction of the flame cured to the burner support and covering opposite sides and the" front of the burner tip, said shield being spaced at the front from the end ofsaidfi tip and entirely open spaced frointhe burner supported in the front of said shield and adjustable to and from theburner tip, said tubular member having an opening therethrough larger than the opening. in-

burner tip and in alinemen't* therewith throngh which opening the gas flame is adaptedto pass.

In testimony whereof I aflix my signature l- ,i in presence or two witnesses.

J. CoMnR', LEROY lemmas,

Gop'i of this patent may be ohtained for five cents each, by addressing the commissioner of Patents,

Washing-ton; 1). er I enough adapted to be al ined with the" open 

